Principles of Microeconomics
7th Edition
ISBN: 9781305156050
Author: N. Gregory Mankiw
Publisher: Cengage Learning
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Question
Chapter 14, Problem 5CQQ
To determine
The relationship between price, marginal cost, and average total cost in the long run equilibrium of the competitive market.
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Consider a kettle firm A in a perfectly competitive market. Table 1 shows the quantity
produced per hour (Q) and the total cost (TC) in the short run.
Quantity
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12345C70
2
6
8
Total cost
17
30
40
55
75
100
130
165
210
Fixed cost
17
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17
17
17
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17
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Assume that a firm in a competitive market faces the following cost information. If the market price for this firm's product is $40, calculate the profit maximizing level of output for this firm using marginal analysis. It may help to create your own cost table and fill in columns for Marginal Cost and Average Total Cost based on the Total Cost information below.
a.What is the level of profit for this firm at the profit maximizing output?
b.To convince yourself that the quantity you found is indeed the profit maximizing quantity, try calculating what the profit would be at the next higher level of output. What did you find?
c. What do you predict will happen in this market over the long run?
A firm produces a product in a perfectly competitive industry and has a total cost function
TC= 50+4q+2q².
a. At the short-run market price of $20, the firm is producing 5 units of output. Is the firm
maximizing its profit? Explain.
b. What quantity of output will the firm produce in the long run, assuming there is no change in
cost structure? What will be the long-run equilibrium price?
c. Graphically depict the long-run equilibrium for an individual firm within this market.
Chapter 14 Solutions
Principles of Microeconomics
Ch. 14.1 - Prob. 1QQCh. 14.2 - How does a competitive firm determine its...Ch. 14.3 - Prob. 3QQCh. 14 - Prob. 1CQQCh. 14 - Prob. 2CQQCh. 14 - Prob. 3CQQCh. 14 - Prob. 4CQQCh. 14 - Prob. 5CQQCh. 14 - Prob. 6CQQCh. 14 - Prob. 1QR
Ch. 14 - Prob. 2QRCh. 14 - Prob. 3QRCh. 14 - Prob. 4QRCh. 14 - Prob. 5QRCh. 14 - Prob. 6QRCh. 14 - Prob. 7QRCh. 14 - Prob. 8QRCh. 14 - Prob. 1PACh. 14 - Prob. 2PACh. 14 - Prob. 3PACh. 14 - Prob. 4PACh. 14 - Prob. 5PACh. 14 - Prob. 6PACh. 14 - A firm in a competitive market receives 500 in...Ch. 14 - Prob. 8PACh. 14 - Prob. 9PACh. 14 - Prob. 10PACh. 14 - Prob. 11PACh. 14 - Prob. 12PA
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- Assume that a firm in a competitive market faces the following cost information. If the market price for this firm's product is $40, calculate the profit maximizing level of output for this firm using marginal analysis. a.Approximately where do you think the price will end up in this market over the long run? b.Last, instead of assuming a given price, how would you go about finding the equilibrium price if you were given information on market demand?arrow_forwarda) Write the expressions for the MC, AVC and ATC at Smell the Roses. In a diagram, draw the MC, AVC and ATC curves you found. (Keep in mind that the MC and AVC curves in this example are straight lines.) The market for cut flowers is perfectly competitive. On weekdays, the florist can sell bouquets at a unit price of $40. b) Should the florist stay open on weekdays? If so, how many bouquets should it sell to maximize profit? Would the florist be profitable on weekdays? On weekends, the market price of a bouquet drops to $20. c) Should a typical florist stay open for business? If, so how many bouquets should it sell to maximize profit? Would the florist be profitable on weekends?arrow_forwardSuppose Robin's Clock Works produces in a perfectly competitive market. Suppose the average total cost of clocks is $95, the average variable cost of clocks is $90, and the price of clocks is $85. If the firm is producing the level of output where marginal cost equals price, then in the short run the firm: A) can increase profit by increasing output.B) is earning a positive economic profit.C) should continue to produce since total revenue exceeds total variable cost.D) should shut down.arrow_forward
- The wheat industry is comprised of many firms producing an identical product. Market demand and supply conditions are indicated in the left-hand panel of the figure attached; the long-run cost curves of a wheat farmer are shown in the right-hand panel. Currently, the market price for wheat is $2 per pound, and at that price, consumers are purchasing 800,000 pounds of wheat per day. Using the graphs attached, answer the following: a. How many pounds of wheat will each farmer produce if they want to maximize profits? b. How many farmers are currently serving the industry (fractional numbers are fine)? c. In the long run, what will the equilibrium price of wheat be? Briefly explain your answer.arrow_forward(a) Let the industry producing soybeans be in a long-run equilibrium. What is the equilibrium price of a bushel of soybeans? How many billions of bushels are produced? How many farmers are there in the industry? What is the shipping fee per bushel of soybeans? (b) Suppose that the demand for soybeans drops due to decreased im- port by China and becomes Q = 15.3 − p. In a new long run equilibrium, what is the equilibrium price of a bushel of soybeans? How many billions of bushels are produced? How many farmers are there in the industry? What is the shipping fee per bushel? (c) Calculate the change in the producers’ surplus between the situations described in (a) and (b). (d) Show that the decrease in the producers’ surplus equals to the decrease in the total shipping fees as the industry contracts incrementally from the equilibrium output in (a) to the equilibrium output in (b).arrow_forwardFirms in an industry have the following cost function: C(q)=3q3-6q2+4q. If the market is perfectly competitive, what do we expect the price to be in the long run? Select one: a. 2 b. 3 c. 1 d. 8arrow_forward
- Suppose the wholesale market for corn is a perfectly competitive market, and all firms in the corn industry are profit-maximizing firms. Consider that the market is in short-run equilibrium. Which of the following statements are correct? Choose one or more: A. Total costs for each firm in the market may be different. B. All firms in the market must be earning identical profits. C. All firms selling corn must have the same marginal cost, regardless of each firm's cost structure. D. Firms that choose not to sell in this market must be earning exactly zero profit. E. All firms in the market must be making either positive profits, or exactly zero profit.arrow_forwardQ3: a. If a competitive firm is making loss in the short run, and it is selling a (100) units of a good at S.R(9). To be known that the AVC is S.R(10). What should the firm decide? If the quantity produced changed from 1 to 2, the total cost changed from 64 to 80 and the price is 40. b. What is the total revenue? c. What is the marginal cost?arrow_forwardSuppose that firm is in a breaking even status in a perfectly competitive market. Using graphs (for both industry and firm) to explain how a decline in demand in the short run affects some firms’ performance (e.g., earn profits or experience loss). In the long run, how this results in exit of some firms from the same perfectly competitive market. Comment on the market equilibrium quantity and price in the long run?arrow_forward
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